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Finding the Fourth Proportional to 17,109.76, 25,665.56 and 5,423.89

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Solution

The fourth proportional to 17,109.76, 25,665.56 and 5,423.89 is: 8,136.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,109.76 : 25,665.56 = 5,423.89 : x
  2. Step 2: Convert to fraction form
    17,109.76/25,665.56 = 5,423.89/x
  3. Step 3: Cross multiply
    17,109.76x = 25,665.56 × 5,423.89
  4. Step 4: Simplify right side
    17,109.76x = 139,207,174.23
  5. Step 5: Solve for x
    x = 139,207,174.23/17,109.76
  6. Step 6: Final answer
    x = 8,136.13

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.